The single-measure biomarker measures the level of mtDNAcn, an inheritedmitochondrialDNA genetic code, in semen.

Elevated levels of this marker have been linked to decreased semen quality and lower odds of fertilization.

Approximately 1 in 8 couples in the U.S. have trouble getting pregnant or sustaining a pregnancy.

sperm sample

Aleksandr Zubkov / Getty Images

We hope to have better diagnostics tests in the future.

Lifestyle modifications may help be able to offset infertility.

But if it is genetic, then we are stuck, because you cant change someones genetics.

doi:10.1093/humrep/deaa191

Centers for Disease Control and Prevention.Infertility FAQs.

National Infertility Association.Fast facts.